The kitty graphics protocol lets you send images to display in the terminal. I had a play around with it trying to make a similar GUI. The big gotcha is text rendering. You can either stick to normal grid aligned monospace, or I think you could maybe use a texture atlas, but it's not going to be very efficient at all. I haven't got as far as trying that though.

The videos... while they work are probably uncompressed video which is only going to work well over a very fast network.